wc_add_to_cart_message() when non-array is passed.

includes/wc-cart-functions.php

@@ -95,7 +95,7 @@ function wc_add_to_cart_message( $products, $show_qty = false ) {
 		$show_qty = false;
 	}
 
-	if ( ! $show_qty && ! is_array( $products ) ) {
+	if ( ! $show_qty ) {
 		$products = array_fill_keys( array_values( $products ), 1 );
 	}
 

readme.txt

@@ -158,6 +158,8 @@ Yes you can! Join in on our [GitHub repository](http://github.com/woothemes/wooc
 
 == Changelog ==
 
+Fix - wc_add_to_cart_message() when non-array is passed.
+
 = 2.6.1 - 16/06/16 =
 * Fix - Added missing localized format for line taxes in orders screen to prevent total miscalculation in manual orders.
 * Fix - Improved the hour and time fields validation pattern on the orders screen.